Manufacture of pure ice.



W. P. WIEMANN.

MANUFACTURE OF PURE ICE. APPLICATION man FEB. 18, 1914.

1,144,;a12@ Y I PatentedJune 22, 1915.

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INVENTOR ATTORNEY 0 M. Pl flemanh.

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Specification-of Letters Patent. I Patented June 22, 1915.

Application filed February 18 1914. Serial No, 819,528.

ful Improvements in the Manufacture of PureIce, of which the following'is a specification, reference being had therein'to the accompanying drawing.

This invention relates to amethodand apparatus for-the manufacture of pure ice by the can system, and has for its object to reduce the tlme of freezing, and'to further eliminate the slush bottom and central core, as well as prevent the formation of air needlesin the block of ice.

Theimprovement in the manufacture ofpure ice by the can system in accordance with this invention, is to confine to that part of the process of manufacture known as the freezing or brine tank, and relates primarily to the peculiar movement as here inafter set forth, of the brine and ice cans, also the water within the cans, and the method or means for securing, orproducing said movement.

With the foregoing and-other objects in view, the invention consists of the novel method and a paratus as hereinafter more fully described and illustrated in the ac companyingdrawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

As showing two forms'of'an apparatus ca able of carrying the methodinto efi'ect, re erenceis had to the. accompanying drawin s in which I igure 1 is a longitudinal section or the apparatus; Fig.- 2'a-crosssectional view of one form. of an apparatus, and Fig 3 isa cross sectional'view-of. another form of-apparatus.

generatin a the le tin sin ate, a dea series of stationa' ammonia lpes ar- [ran ed in the form 0? oils and indicated at 5, The sets of coils are maintained in space I relation with respect to each'otlier, and the gotes a brine tank see arranged thereinis inlet end of the cOil s iS-indicatedatfi and the outlet at 7. 1' v end of the tank to the other,'returning agaln ahd back and 'forth until small squares to The coils extend from one a bank of several pipes high is formed. The 'first and last ends of the coils of each set are respectively the inlet 6 and outlet 7, and are connected to the headers of an ammonia system.

The top of thetank 4 is composed of a wood'frame work 8- arranged in numerous receive the ice cans9, and rovided with the required these latter are amount of distil ed water as at. 10. The ice cans 9 are floated in the brine '11 which is arranged within the tank 4, and the height of the brine and the amount of water in the cans is so adjusted that the cans float several'inch'es out of the brine and several inches from the bottom of the brine tank.

he tops of the cans fit loosely in the frame work of'the tank top andthe cans float between the sets of pipe coils, these latter being so spaced to allow from two to four inches therebetween and the cans, that is to saya space from two to four inches between each side of the can and a set of coils. It will be noticed that thelower end of the can is free to oscillate or swing between the sets of pipe coils several inches without comin in contact with them. The upper end 0 the can'is held loosely in position by the frame 8 of'the tank which is covered with'a lid 12. 7

In the process of freezing the water withinthe cans, the heat contamed in the water is extracted b the expanded ammonia gas within the coi s, through the medium of the brine, which is in contact with both the ice cans and the'pipe coils.

that the freezing process is greatly pro.-

moted by agitating the brine, that is, tlifi' It is well known brine-incontact with the canis rapidly and continuousl exchanged with that in contact with t e pipe coils, to convey the heat from the water-1n the cans to the ammonia in the pipe coils. The method of brine agitation, now in general use, is the circulating system, in which the brine is pumped from onepart of the tank to'another, or by a distributing'pipe system over the entire tank, or is circulated by an agitator whichbrine directly under thecansi It will now be seen that the freezing of the waterinto ice depends on the extraction of the heat from the water, and the more rapid and perfect the exchange of brine between the ice cans and pipe coils, the more rapidly the heat will be conveyed from the water in the cans to the ammonia in the coils.

To greatly facilitate the conveyance of the heat from the ice cans to the pipe coils is one of the essential features of the invention. As before stated, the tank 4 is proh the brine over the pipe coils between the cans and thus agitating the brine, in such a' manner, as to alternately bring the brine in contact with the ice cans 'andplpe coils for the purpose of conveying the heat from the water in the cans to the ammonia in the coils, thereby promoting the freezing of the water within the cans.

The method further resides in the secur-' ing of a continuous movement of the water in the ice cans, for'the purpose of preventing the lodgment of foreign matter and air bubbles on the surface of the ice in the process of freezing, which matter forms slush bottoms, cores, and also air needles in the ice. The movement of the water in the cans is secured by theswinging or reciprocating motion of the lower portion of the cans, which motion does not disturb the level of the water in the "cans, but does cause a washing action between the water and ice within the can, thus preventing'the lodgment of foreign matter and air bubbles adhering to the surface of the ice during the process of freezing. -In Figs. l'iflset up to obtain the agitation of brine in a manner as stated, the swinging of the cans and the movement of the water in the cans, and such means consists of a yalveless surge pump, 12, havin and the said ipe connections 13.-14 exten along the si es of the tank 4,. as at 15, and the portions 15 of the pi e connections 13--14 which .exte'ndzalong't e sides of the tank 4, are

-sur e pump, and a p1 1 and 20f the drawings, a means pipe connections 13-14 from each end 0 the cylinder of the pump d re lacin v a quantity of brine from each provided withbranch pipes 16]}; which open into the tank 4 near the bottom of the latter, and the'said branch pipes 16 I are arranged at each cross row of ice cans. The pump 12, having no valves, acts to dise the path of the pipe coils. The pulsating action is continuous and the number or speed of pulsations maybe regulated by the pump.

While the means illustrated in Figs. 1 and 2 for causing the oscillating motion to the brine and ice cans by a' displacement and replacement of the brinein the lower portion of the tank is preferable,.as-it does not cause a sea-saw motion'to the brine at the surface of the tank, however, other means may be employed to secure an oscillatory motion of the brine and cans,by way of example, as is illustrated in Fig. 3, and which consists of a pusher bar 17, aving lugs18 in contact with the cans, and which is operated throu h the side of the brine tank by cams'or ot er means 19.

What I claim is e 1. a 1n the manufacture of ice, a brine tank containing brine, and further having ammonia pi es arranged therein, ice cans floating in t e brine and containing water, a e systerfi leading from sai pump tothe si es of the tank wherey a tory motion to the brine will be imparted to the pump is operateda reciprocav the brine, causing the brine to move across the path of the ammonia pipes.

2. In the manufacture of ice, a brine tank containing brine, and further having ammonia pipes arranged therein, ice cans floating in the brine and containing water, a

surge pump and a pipe system leading from said pump to the sides of thetank'w ereby and havingtheir openings directed against the cans.

' 3.111 the manufacture of ice, a brine tank, ammonia coils arranged therein, ice cans within the tank, .said tankcontaining brine, and means for alternately displacing and si' e of t e tank, causing thereby the reciprocation 'of the b'rinein the tank.

ture in 'the pres'ence of two witnesses.

l ai M X'.-'H.SRorpv 1Tz,

when the ump is operated a reciproc'atorytestimony whereof "I ifix my sigha- LIA M' PI'WIEMANN 

